Is Your GM Vehicle Running Rough or Not Starting?
If your Saturn VUE, Silverado, Suburban, or other compatible GM vehicle is suffering from erratic behavior, poor fuel economy, or a persistent Check Engine Light, the root cause is often a failing Engine Control Module (ECM). As the central computer for your engine, the ECM is responsible for managing everything from fuel injection and ignition timing to emissions control and transmission shifting. When it begins to fail, the symptoms can be widespread and frustrating, often mimicking other component failures and leading to costly, incorrect repairs.
This replacement Engine Control Module, compatible with part numbers 12625455 and 12629009, is the definitive solution to restore your vehicle’s factory performance and reliability. We take the guesswork and high dealership costs out of the equation. Unlike a generic unit from a parts store, this ECM is specifically programmed to your vehicle’s unique Vehicle Identification Number (VIN) before it ships. This ensures seamless integration with your vehicle’s existing systems, including the anti-theft system, transmission, and other modules. We load the latest, most stable software updates from GM, often correcting factory flaws and improving overall drivability.
From the Diagnostic Bay
We had a 2009 Silverado 2500 in the shop that was a real head-scratcher. The owner had replaced the throttle body, mass airflow sensor, and all eight spark plugs trying to chase down an intermittent stalling issue and a P0606 (ECM Processor Fault) code that would come and go. The truck would run fine for days, then suddenly die at a stoplight. After hours of checking wiring harnesses and grounds, we connected our diagnostic tool and monitored the live data. We noticed the ECM’s internal voltage readings were fluctuating wildly right before a stall. We swapped in one of our VIN-programmed ECMs, performed the security relearn, and the truck ran perfectly. The customer was thrilled to finally have a reliable vehicle again after months of frustration. It’s a classic case of how a failing ECM can send you down a rabbit hole of unnecessary parts replacement.
Symptoms of a Failing Engine Control Module
- ✔ Check Engine Light is illuminated with various trouble codes (DTCs), especially internal processor codes.
- ✔ Engine misfires, stumbles, or runs rough.
- ✔ Vehicle experiences intermittent or complete no-start conditions.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Automatic transmission shifts harshly, erratically, or not at all.
- ✔ Stalling for no apparent reason, either while driving or at idle.
- ✔ Communication issues with diagnostic scan tools.
The Superior Solution: A VIN-Programmed 2010 VUE Engine Computer
Don’t settle for a used module from a junkyard that could have the same issues as your current one, or a blank unit that requires expensive dealership programming. Our process is simple and effective. After you place your order, you provide us with your vehicle’s VIN. Our technicians then use official GM equipment to flash the module with the correct software for your exact make, model, engine, and options package. This ensures that the module you receive is a true plug-and-play solution. In most cases, the only additional step required is a simple security relearn procedure, which can often be done without any special tools.
Broad Compatibility Across the GM Lineup
While this part is a perfect fit for the 2010 Saturn VUE with the 3.5L engine, its versatile architecture allows it to be programmed for a wide array of GM trucks, vans, and cars from 2009 and 2010. This includes popular models like the Chevrolet Silverado, Suburban, Tahoe, Express, and Impala; the GMC Sierra, Yukon, and Savana; and the Cadillac Escalade. Always verify that your original module’s part number is 12625455 or 12629009 to ensure a perfect match. Restoring your vehicle’s brain has never been easier or more reliable.
Frequently Asked Questions
Do I need to have this engine computer programmed?
No. The main benefit of our service is that we program the module for you before we ship it. Simply provide your VIN during or after checkout, and we handle the rest, ensuring it’s ready for installation.
What is a VIN and where can I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can typically find it on a plate on the driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is this part difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and removing a few bolts and electrical connectors. After installation, you may need to perform a security relearn procedure (also called a VATS relearn) to sync the new ECM with your vehicle’s keys. This procedure can usually be done at home without special tools and instructions are widely available online.
Will this fix my specific problem?
This ECM will correct issues directly caused by a faulty engine computer. While the symptoms listed are common indicators of ECM failure, it’s always best to have a proper diagnosis performed by a qualified mechanic to rule out other potential causes like wiring or sensor issues.
What happens if I install it without programming?
An unprogrammed ECM will not work in your vehicle. It will not be able to communicate with the other modules, and the engine will not start due to the anti-theft system. Our pre-programming service is essential for the part to function correctly.